Sciweavers

508 search results - page 84 / 102
» Bringing Order to Query Optimization
Sort
View
VLDB
2004
ACM
100views Database» more  VLDB 2004»
14 years 1 months ago
Online Balancing of Range-Partitioned Data with Applications to Peer-to-Peer Systems
We consider the problem of horizontally partitioning a dynamic relation across a large number of disks/nodes by the use of range partitioning. Such partitioning is often desirable...
Prasanna Ganesan, Mayank Bawa, Hector Garcia-Molin...
AAAI
2008
13 years 10 months ago
Minimal Contraction of Preference Relations
Changing preferences is very common in real life. The expressive power of the operations of preference change introduced so far in the literature is limited to adding new informat...
Denis Mindolin, Jan Chomicki
UAI
2001
13 years 9 months ago
UCP-Networks: A Directed Graphical Representation of Conditional Utilities
We propose a directed graphical representation of utility functions, called UCP-networks, that combines aspects of two existing preference models: generalized additive models and ...
Craig Boutilier, Fahiem Bacchus, Ronen I. Brafman
CORR
2011
Springer
143views Education» more  CORR 2011»
13 years 2 months ago
CoPhy: A Scalable, Portable, and Interactive Index Advisor for Large Workloads
Index tuning, i.e., selecting the indexes appropriate for a workload, is a crucial problem in database system tuning. In this paper, we solve index tuning for large problem instan...
Debabrata Dash, Neoklis Polyzotis, Anastasia Ailam...
SP
1996
IEEE
13 years 11 months ago
View-Based Access Control with High Assurance
View-based access control enables content-based and context-based security, as opposed to container-based security provided in operating systems. However, view-based access contro...
Xiaolei Qian